Abstract: A container for mixing includes a container body having a first end with an opening and a second end opposite the first end. The second end has a closed rounded shape. The container body further includes a container wall between the opening and the second end. The container wall has an interior surface with a single substantially continuous rounded wall face with a plurality of smooth indentations therein arranged in a helical configuration around the wall face between the opening and the second opposite end.

Abstract: A method and apparatus for holding a shirt collar in a desired position and orientation, magnetically, against a shirt front. The apparatus includes a collar stay insertable into a conventional collar stay pocket or attachable to an inside surface of a collar, and a magnet magnetically attachable or couplable to the collar stay through the shirt front, and the pocket, if applicable, for holding the shirt collar in the selected position and orientation. The collar stay and the magnet can be optionally interlockable and/or include detents for preventing undesired relative movements thereof, which can include particularly, relative longitudinal movements, but which can also include twisting and sideward movements. For collars which do not include any collar stay pocket, or where a collar stay pocket is not desired to be used, the collar stay can include an adhesive on an outer surface thereof adapted for adhesive attachment to the inside surface of a collar.